Concrete vs Plastic Septic Tanks (Concrete is Better)

Grahams Precast Concrete Products • April 26, 2022

ADVANTAGES OF CONCRETE SEPTIC TANKS OVER PLASTIC

Concrete septic tanks in QLD are a vital component of every home and business—especially rural properties that are not connected to a sewage system.


Considering septic tanks operate as a chamber that allows the flow of wastewater for basic treatment, it’s important to have a system that’s highly durable and long-lasting. In this blog, we’ll talk about the differences between concrete and plastic septic tanks and tell you exactly why concrete is better.


Keep reading or give us a call on 02 6632 2978 to get a quote!

WHAT IS THE DIFFERENCE BETWEEN CONCRETE AND PLASTIC SEPTIC TANKS?

The main different between a concrete and plastic septic tank is, yep, you guessed it—material. And although plastic septic tanks are popular and have their importance, we believe concrete is the better choice for our clients.


For starters, plastic septic tanks are lightweight and resistant to corrosion. However, because they’re lightweight, plastic septic tanks are more likely to be damaged during the installation as opposed to concrete. First point to concrete.


Secondly, concrete septic tanks have higher effluent levels than plastic tanks. Not only that, plastic septic tanks, if not installed correctly, have been known to ‘float’ to the ground’s surface. Concrete septic tanks on the other hand, because of their weightiness, will not float to the surface. Second point to concrete.

WHY ARE CONCRETE SEPTIC TANKS BETTER?

Now that we’ve compared some of the key differences between concrete and plastic septic tanks, let’s look at the key benefits of choosing concrete for your home. At Graham’s Precast Concrete Products, we choose concrete, not just because it’s part of our wheelhouse—we also believe it’s the best material to use.


The advantages of choosing a concrete septic tank includes:


  • Highly durable
  • Rustproof
  • Far less likely to incur damage during installation
  • Does not ‘float’ to ground’s surface
  • Has no impact on groundwater quality


Each septic tank that Graham’s Precast Concrete Products supplies is constructed in accordance with Australian and NZ industry standards (1546.1.2 2008 Part 1). When it comes to wastewater treatment, you need a septic system that’s dependable and reliable. And for that, we recommend the study, versatile material that is concrete. The ultimate wastewater treatment solution. Septic tanks are an important asset, which is why it’s vital you invest in the right material.

BENEFITS OF CONCRETE SEPTIC TANKS IN QLD

The options available to you when it comes to installing a new septic tank may surprise you. You may be unsure whether to go with a standard PVC or steel tank or maybe you want a concrete septic tank.


Septic tank customers often want to know that their tank will last for a long time and function efficiently without causing them many problems. Concrete septic tanks have this advantage, making them one of the most popular. Although plastic tanks may seem less expensive, they’re probably not best for the long term, and that’s why concrete septic tanks offer so many advantages, including:


Built Tougher

  • Due to their natural rigidity and water tightness, concrete tanks are ideal for a wide range of applications, including septic tanks. Concrete septic tanks can last for many decades if good quality concrete is used. It also won't rust, nor is it subject to 'floating' or buoyancy problems affecting plastic tanks.


Concrete Septic Tanks Are Weighted

  • Concrete tanks can be heavy, as with any concrete structure. This might be a disadvantage if you need to remove them, but the weight also means it won't be carried to the surface by soil movement or other outside factors.


Rust Free & Long-lasting

  • Graham's Precast Concrete Products' septic tanks will not rust. There are parts in PVC tanks that will rust or fail, and steel tanks are also susceptible to rust or corrosion. Concrete tanks won't deteriorate like these other tanks, so they last longer.
  • The fact that the Romans constructed concrete that has been impervious to the sea for centuries may surprise those looking into concrete septic tanks. If the Romans' concrete walls could endure storms for so long, a concrete septic tank can undoubtedly do the job for your business or home!
  • While some polymers snap and crack, concrete is exceptionally durable and water-tight, which is why it is used to build houses, bridges, and dams.


No Risk Of Collapse

  • PVC or steel tanks can sometimes collapse inwards when you pump material from them. The use of concrete septic tanks can avoid this problem, which can be expensive.


Higher Effluent Capacity

  • Effluent is the term for the wastewater and filth that accumulate in a septic tank over time. It is necessary to pump out the septic tank if it fills up too quickly. Due to the size of concrete septic tanks, homeowners are much less likely to need to pump their tanks.


Non-toxic


  • Concrete is an environmentally friendly form suitable for septic tanks of any size. Groundwater will not be affected by the product, and the soil surrounding it will not be poisoned, which is excellent for gardens.


Easy Installation

  • Concrete is a reliable and fast installation material for septic tanks. In addition to providing high-quality installations, Graham’s Precast Concrete Products can also assist you with managing your wastewater more effectively.


Contact The Experts


The health of your home depends on having the right septic tank. You need wastewater systems to ensure that wastewater is safely and effectively removed from your home. Graham’s Precast Concrete Products manufacture the best concrete septic tanks in Queensland. We are passionate about providing outstanding customer service and the highest quality tanks. Having built and maintained an impeccable reputation for over 40 years, Graham’s Precast Concrete Products is a proudly Australian company.


Our concrete products are of excellent quality, and our customer service is even better. The plumber can hook up our septic tanks right on the job site after delivering them. So, you can rest assured your wastewater is being properly managed, we can even help you install reed beds for additional filtration. You just need to coordinate the dates with your plumber, and we’ll install the tank when they arrive.


Get in touch with Graham’s Precast Concrete Products by calling 02 6632 2978 or online enquiry form today for a free, no-obligation quote. For more information on septic tanks and other precast concrete products, read our blog on the Advantages of Precast Concrete.

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